331992331 has 8 divisors (see below), whose sum is σ = 362305584. Its totient is φ = 301701120.

The previous prime is 331992329. The next prime is 331992341. The reversal of 331992331 is 133299133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331992331 - 2¹ = 331992329 is a prime.

It is a super-2 number, since 2×331992331² = 220437815685627122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331992341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53755 + ... + 59611.

It is an arithmetic number, because the mean of its divisors is an integer number (45288198).

Almost surely, 2^331992331 is an apocalyptic number.

331992331 is a deficient number, since it is larger than the sum of its proper divisors (30313253).

331992331 is a wasteful number, since it uses less digits than its factorization.

331992331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021.

The product of its digits is 13122, while the sum is 34.

The square root of 331992331 is about 18220.6567115458. The cubic root of 331992331 is about 692.4302256069.

The spelling of 331992331 in words is "three hundred thirty-one million, nine hundred ninety-two thousand, three hundred thirty-one".